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fix(snmp): читать FDB из Q-BRIDGE-MIB для таблицы устройств за портом

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Добавил сбор dot1qTpFdbPort и парсинг MAC из хвоста OID-индекса,
чтобы Таблица 2 заполнялась на коммутаторах, где FDB хранится в Q-BRIDGE-MIB (vlan+mac).

Made-with: Cursor
This commit is contained in:
Луценко Андрей Анатольевич
2026-04-10 17:49:23 +10:00
parent 5b82901565
commit 264865f9d8
1 changed files with 16 additions and 6 deletions
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internal/scans/runner.go
+16 -6
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@@ -227,12 +227,21 @@ func probePortDevices(client *gosnmp.GoSNMP, ip string, checkedAt time.Time) []P
basePortIfIndex := walkAsMap(client, ".1.3.6.1.2.1.17.1.4.1.2")
// dot1dTpFdbPort: mac(6 octets) -> bridge-port
fdbMacToBridgePort := walkAsMap(client, ".1.3.6.1.2.1.17.4.3.1.2")
// dot1qTpFdbPort (Q-BRIDGE-MIB): vlan + mac(6 octets) -> bridge-port
qFdbMacToBridgePort := walkAsMap(client, ".1.3.6.1.2.1.17.7.1.2.2.1.2")
// ipNetToMediaPhysAddress: ifIndex.ip -> mac
arpIfIPToMac := walkAsMap(client, ".1.3.6.1.2.1.4.22.1.2")
if len(basePortIfIndex) == 0 || len(fdbMacToBridgePort) == 0 {
if len(basePortIfIndex) == 0 || (len(fdbMacToBridgePort) == 0 && len(qFdbMacToBridgePort) == 0) {
return nil
}
combinedFdb := make(map[string]string, len(fdbMacToBridgePort)+len(qFdbMacToBridgePort))
for k, v := range fdbMacToBridgePort {
combinedFdb[k] = v
}
for k, v := range qFdbMacToBridgePort {
combinedFdb[k] = v
}
macToIPs := make(map[string]map[string]struct{})
for key, mac := range arpIfIPToMac {
@@ -255,9 +264,9 @@ func probePortDevices(client *gosnmp.GoSNMP, ip string, checkedAt time.Time) []P
}
seen := make(map[string]struct{})
out := make([]PortDeviceResult, 0, len(fdbMacToBridgePort))
for macTail, bridgePortRaw := range fdbMacToBridgePort {
mac := dottedDecimalToMAC(macTail)
out := make([]PortDeviceResult, 0, len(combinedFdb))
for macTail, bridgePortRaw := range combinedFdb {
mac := dottedDecimalToMACTail(macTail)
if mac == "" {
continue
}
@@ -322,11 +331,12 @@ func probePortDevices(client *gosnmp.GoSNMP, ip string, checkedAt time.Time) []P
return out
}
func dottedDecimalToMAC(s string) string {
func dottedDecimalToMACTail(s string) string {
p := strings.Split(strings.TrimSpace(s), ".")
if len(p) != 6 {
if len(p) < 6 {
return ""
}
p = p[len(p)-6:]
b := make([]byte, 6)
for i := 0; i < 6; i++ {
n, err := strconv.Atoi(p[i])